University of Colorado

Mineral Structure and Property Data

TiO2 Group

The TiO2 group is composed of rutile, anatase, and brookite.

The crystal structure of rutile.

The crystal structure of anatase.

The crystal structure of brookite.

                Rutile      Anatase     Brookite 
                TiO2        TiO2        TiO2   


Form.Wt.        79.890      79.890      79.890      
Z               2           4           8         
CrystalSystem   Tet         Tet         Orth        
PointGroup      4/mmm       4/mmm       mmm      
SpaceGroup      P42/mnm     I41/amd     Pbca

UnitCell
a(Å)            4.5845      3.7842      9.184
b(Å)                                    5.447
c(Å)            2.9533      9.5146      5.145
Vol             62.07       136.25      257.38

MolarVol        18.693      20.156      19.377
Density         4.2743      3.895       4.123

Thermal Expansion(Volumetric)
alpha           28.9
a0              0.2890

Mineral Data Base Index

GEOL 3010 Syllabus

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